Nuts and Seeds
If you don’t eat fish, then you can still get a good intake of omega-3 fatty acids by snacking on nuts and seeds. All nuts and seeds contain omega-3, but walnuts, chia seeds and flaxseeds (also sometimes called linseeds) are among the best sources of this essential nutrient.
Numerous studies now support the hypothesis that fatty acids support brain function and offer a protective effect due to the high fat content of the brain. So make nuts and seeds your go to snack, whether you eat fish or not!
Seeds are super versatile and can be sprinkled on cereal and granola, added to smoothies and even added to curries and casseroles for added texture. Carry a tub of nuts with you for when the snack urges hit during the afternoon slump. They contain healthy fats including omega-3, and choose unsalted versions as a healthier alternative to crisps.